
from rest_framework import serializers

from students.models import Class, Student
from system.models import Department
from adminuser.serializers import DepartmentSerializers

class ClassSerializer(serializers.ModelSerializer):
    school=DepartmentSerializers(read_only=True) #关联序列化器
    school_id=serializers.IntegerField(write_only=True)
    def validate_school_id(self, value):
        try:
            Department.objects.get(id=value)
        except:
            raise serializers.ValidationError("请求的school_id 不合法找不到对应的学院信息")
        else:
            return value
    class Meta:
        model=Class
        fields='__all__'

class StudentSerializer(serializers.ModelSerializer):
    cls=ClassSerializer() #关联的序列化器
    class Meta:
        model=Student
        fields='__all__'